CORAL ‘A’ Special Grade

CORAL®  ‘A’ Special Grade anode alloy is the preferred chemical composition of the major oil and offshore coperator companies for deep water applicantions. The alloy is certified according to DNV Type Approval Programme.

Technical Specification

 Alloying elements Zn 4.75 – 5.5 % 
  In 0.016 – 0.020% 
  Al Balance 
 Other elements Si  0.08 – 0.12 % 
  Cu max

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. 0.0030 % 

  Fe max. 0.06 % 
Cd max. 0.0020 %
 Others Each  max. 0.02 % 
 Others Total max. 0.050

Anode Performance Data (ambient sea water)

Capacity :

  2585 Ah/kg (1173 Ah/lb)                    

Consumption rate :

  3.39 kg/Ayr (7.47 lbs/Ayr)                  

Closed circuit potential : 

  -1.09 volts (Ag/AgCl)                 

Specific gravity :

  2.78 kg/dm3 (0.101 lbs/cu.in)                 

Data Sheet – CORAL® ‘A’ Special Grade anode alloy

DNV Type Approval Certificate

 

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